Samsung AM080 XV Series - Outdoor Fan PCB Overvoltage;Low Voltage Error

Troubleshooting
Samsung Electronics 4-79
4-3-52 Outdoor Fan PCB Overvoltage / Low voltage error
Outdoor unit display
Judgment Method  DC-Link Overvoltage / Low voltage occurs.
Cause of problem  Check the status of DC LINK Connector
1.
Cause of problem
ዋ Be careful when you check DC voltage.(600Vdc װ )
How to check voltage from DC LINK connector disconnect from FAN PCB
ᐓ Turn off the MAIN Power
ױᐔ Disconnect the DC LINK connector from FAN PCB
ױᐕTurn on the MAIN Power
ױᐖCheck voltage of connector
AC Input Voltage
Standard
AC Voltage(Vac)
Standard
DC Voltage(Vdc)
Min. Max. Min. Max.
208~230V 187 253 265 358
460V 414 506 585715
380~415V 342 457 484 646
Standard voltage range of DC and AC
Check AC Voltage of Power source
NG
OK
Check AC Voltage
of the Power terminal?
[Refer to Standard AC Voltage ]
OK
Check DC voltage of
DC LINK connector disconnect from FAN PCB
[Refer to Standard DC Voltage]
NG
OK
Check the status of DC LINK Connector
Replace connected wire
Replace FAN PCB
NG
(If the voltage is out of Std. range)
(If the voltage is out of Std. range)
DC power wire (Inv. PCB)
DC power wire (Fan PCB)